Windows 8.1 HDMI output not working at all

Anonymous
2014-01-05T00:02:03+00:00

Hello, 

I recently purchased a new laptop with Windows 8, which I had never tried before (so I am new to this). I updated to 8.1 the other day, and afterwards I tried connecting the laptop to a brand new LG HD TV through the HDMI ports. I opened the "Project" menu and selected "Duplicate", and while I see something change on my laptop screen (it flickers, and the resolution/colours change), the TV picks up no signal.

The HDMI port on the TV is working correctly (tried it with another device), and so is the HDMI cable. There is some sort of connection happening because the TV enables the HDMI input only when something is detected on the other side of the cable.

I have seen that it might be a known issue with Windows 8.1, but I can't find a solution anywhere. My laptop has an integrated Intel GPU as well as an nVidia GeForce 740M, and I thought perhaps the problem was that it uses the Intel card as a standard, only switching to the nVidia when necessary, but the HDMI is "controlled" by the nVidia. So I've tried disabling the integrated GPU (to no avail - it just switches to the Microsoft Basic one rather than to the better card - this has been checked through dxdiag), as well as uninstalling and reinstalling the nVidia drivers (which were up to date to begin with). I have checked the BIOS to see if I could change the priorities, but there was no option like I see on my Windows 7 desktop.

Is there anything else I can try? It seems really silly to me that I cannot use the HDMI output at all!

Thank you for any help.

Windows for home | Previous Windows versions | Devices and drivers

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Anonymous
2014-01-19T09:08:54+00:00

Hi Nicholas,

Thank you for the updates.

Since the issue persists, you may try the following steps and check:

Method 1:

Please follow the steps given below to uninstall the display driver.

a) Press Windows key + X key when you are at desktop.

b) Select Device Manager.

c) Find and double-click Display driver from the left panel to uninstall.****d) Right-click the device, and click Uninstall.

e) Windows will prompt you to confirm the device’s removal. Click OK to remove the driver.

f) After the uninstallation is complete, reboot your computer.

After you have successfully uninstalled the driver, please go to the computer manufacturer’s website, download the Windows 8.1 display driver for NVidia and check.

Method 2:

You may also check with LG support to see if you need to install any firmware updates for the TV.

You may also try running the Windows Updates and install all the available updates including the optional driver and firmware updates.

Windows Update: Frequently Asked Questions

You may also refer to the articles and check:

Get the best display on your monitor

Connect a second monitor or projector

Hope the information helps. Let us know if you need further assistance with Windows related issues. We will be happy to help.

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Anonymous
2014-09-15T04:59:01+00:00

Did the system restore, it did the trick. This is with a Windows 8.1 computer. I can't find the specific upgrade that did this, but it was an automatic upgrade I did on september 9. There was nothing else done this day. other than "Windows Update", so that IS the problem. I hope this helps anyone!

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Anonymous
2015-05-14T15:18:36+00:00

Thanks bro..

Another solution I have found that 

Some graphics cards have their HDMI port a little loose (cant observe).

So put your HDMI plug very tightly in the GDs HDMI port it will 

100% work all time.

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  1. Anonymous
    2014-12-22T06:29:13+00:00

    All you need to do is update the Intel drivers to the latest ones. Sometimes, simply uninstalling the older sound drivers (as has been recommended at several places) doesn't do the trick. Here's how to update the drivers:

    1. Install the Intel driver Update Utility (www.**intel**.com/p/en_US/support/detect)
    2. Click on Find Drivers>Automatically
    3. You'll get a recommendation to update the graphics driver. For HDMI, this is the one that also controls the audio output.
    4. Update the driver from here and you should be good to go

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  2. Anonymous
    2014-12-22T16:59:25+00:00

    Yeah, well, I've done that numerous times...Intel Tier 1 Support, Microsoft Tier 1 and 2 Support, and Sony Tier 1, Tier 2, and now waiting on the Sony Engineer Dept.  At no time has uninstalling and reinstalling the most current drivers worked.  This is where both Intel and Microsoft has stated that it is because Sony has proprietary drivers for this due to the embedded recovery system and Vaio Care features.

    Now to elaborate on this issue further...the audio issue is reproducible but it is random, sometimes things work perfect and sometimes the audio doesn't work on the hdmi connected device and sometimes the audio doesn't work on the laptop.  The only consistent nature of failure at all times is the very poor performance on the Intel HD Graphics driver on the GPU side of the APU.  The Nvidia performance is perfect, but then again most programs will not to turn the default to the Nvidia graphics card.

    Now, the last contact with Tier 2 Level Sony Support, they had me uninstall the Intel WiDi program without re-installation, and since then the audio issue does not fail when changing display to and from a secondary display every time like it did prior but it did not change the Intel GPU performance.

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